/* Config */
:root {
    --sk-size: 40px;
    --sk-color: #333;
  }
  
  /* Utility class for centering */
  .sk-center {
    margin: auto;
  }
  
  /*  Plane
  
        <div class="sk-plane"></div>
   */
  .sk-plane {
    width: var(--sk-size);
    height: var(--sk-size);
    background-color: var(--sk-color);
    animation: sk-plane 1.2s infinite ease-in-out;
  }
  
  @keyframes sk-plane {
    0% {
      transform: perspective(120px) rotateX(0deg) rotateY(0deg);
    }
    50% {
      transform: perspective(120px) rotateX(-180.1deg) rotateY(0deg);
    }
    100% {
      transform: perspective(120px) rotateX(-180deg) rotateY(-179.9deg);
    }
  }
  /*  Chase
  
        <div class="sk-chase">
          <div class="sk-chase-dot"></div>
          <div class="sk-chase-dot"></div>
          <div class="sk-chase-dot"></div>
          <div class="sk-chase-dot"></div>
          <div class="sk-chase-dot"></div>
          <div class="sk-chase-dot"></div>
        </div>
   */
  .sk-chase {
    width: var(--sk-size);
    height: var(--sk-size);
    position: relative;
    animation: sk-chase 2.5s infinite linear both;
  }
  
  .sk-chase-dot {
    width: 100%;
    height: 100%;
    position: absolute;
    left: 0;
    top: 0;
    animation: sk-chase-dot 2s infinite ease-in-out both;
  }
  
  .sk-chase-dot:before {
    content: "";
    display: block;
    width: 25%;
    height: 25%;
    background-color: var(--sk-color);
    border-radius: 100%;
    animation: sk-chase-dot-before 2s infinite ease-in-out both;
  }
  
  .sk-chase-dot:nth-child(1) {
    animation-delay: -1.1s;
  }
  
  .sk-chase-dot:nth-child(2) {
    animation-delay: -1s;
  }
  
  .sk-chase-dot:nth-child(3) {
    animation-delay: -0.9s;
  }
  
  .sk-chase-dot:nth-child(4) {
    animation-delay: -0.8s;
  }
  
  .sk-chase-dot:nth-child(5) {
    animation-delay: -0.7s;
  }
  
  .sk-chase-dot:nth-child(6) {
    animation-delay: -0.6s;
  }
  
  .sk-chase-dot:nth-child(1):before {
    animation-delay: -1.1s;
  }
  
  .sk-chase-dot:nth-child(2):before {
    animation-delay: -1s;
  }
  
  .sk-chase-dot:nth-child(3):before {
    animation-delay: -0.9s;
  }
  
  .sk-chase-dot:nth-child(4):before {
    animation-delay: -0.8s;
  }
  
  .sk-chase-dot:nth-child(5):before {
    animation-delay: -0.7s;
  }
  
  .sk-chase-dot:nth-child(6):before {
    animation-delay: -0.6s;
  }
  
  @keyframes sk-chase {
    100% {
      transform: rotate(360deg);
    }
  }
  @keyframes sk-chase-dot {
    80%, 100% {
      transform: rotate(360deg);
    }
  }
  @keyframes sk-chase-dot-before {
    50% {
      transform: scale(0.4);
    }
    100%, 0% {
      transform: scale(1);
    }
  }
  /*  Bounce
  
        <div class="sk-bounce">
          <div class="sk-bounce-dot"></div>
          <div class="sk-bounce-dot"></div>
        </div>
    */
  .sk-bounce {
    width: var(--sk-size);
    height: var(--sk-size);
    position: relative;
  }
  
  .sk-bounce-dot {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background-color: var(--sk-color);
    opacity: 0.6;
    position: absolute;
    top: 0;
    left: 0;
    animation: sk-bounce 2s infinite cubic-bezier(0.455, 0.03, 0.515, 0.955);
  }
  
  .sk-bounce-dot:nth-child(2) {
    animation-delay: -1s;
  }
  
  @keyframes sk-bounce {
    0%, 100% {
      transform: scale(0);
    }
    45%, 55% {
      transform: scale(1);
    }
  }
  /*  Wave
  
        <div class="sk-wave">
          <div class="sk-wave-rect"></div>
          <div class="sk-wave-rect"></div>
          <div class="sk-wave-rect"></div>
          <div class="sk-wave-rect"></div>
          <div class="sk-wave-rect"></div>
        </div>
   */
  .sk-wave {
    width: var(--sk-size);
    height: var(--sk-size);
    display: flex;
    justify-content: space-between;
  }
  
  .sk-wave-rect {
    background-color: var(--sk-color);
    height: 100%;
    width: 15%;
    animation: sk-wave 1.2s infinite ease-in-out;
  }
  
  .sk-wave-rect:nth-child(1) {
    animation-delay: -1.2s;
  }
  
  .sk-wave-rect:nth-child(2) {
    animation-delay: -1.1s;
  }
  
  .sk-wave-rect:nth-child(3) {
    animation-delay: -1s;
  }
  
  .sk-wave-rect:nth-child(4) {
    animation-delay: -0.9s;
  }
  
  .sk-wave-rect:nth-child(5) {
    animation-delay: -0.8s;
  }
  
  @keyframes sk-wave {
    0%, 40%, 100% {
      transform: scaleY(0.4);
    }
    20% {
      transform: scaleY(1);
    }
  }
  /*  Pulse
  
        <div class="sk-pulse"></div>
   */
  .sk-pulse {
    width: var(--sk-size);
    height: var(--sk-size);
    background-color: var(--sk-color);
    border-radius: 100%;
    animation: sk-pulse 1.2s infinite cubic-bezier(0.455, 0.03, 0.515, 0.955);
  }
  
  @keyframes sk-pulse {
    0% {
      transform: scale(0);
    }
    100% {
      transform: scale(1);
      opacity: 0;
    }
  }
  /*  Flow
  
        <div class="sk-flow">
          <div class="sk-flow-dot"></div>
          <div class="sk-flow-dot"></div>
          <div class="sk-flow-dot"></div>
        </div>
   */
  .sk-flow {
    width: calc(var(--sk-size) * 1.3);
    height: calc(var(--sk-size) * 1.3);
    display: flex;
    justify-content: space-between;
  }
  
  .sk-flow-dot {
    width: 25%;
    height: 25%;
    background-color: var(--sk-color);
    border-radius: 50%;
    animation: sk-flow 1.4s cubic-bezier(0.455, 0.03, 0.515, 0.955) 0s infinite both;
  }
  
  .sk-flow-dot:nth-child(1) {
    animation-delay: -0.3s;
  }
  
  .sk-flow-dot:nth-child(2) {
    animation-delay: -0.15s;
  }
  
  @keyframes sk-flow {
    0%, 80%, 100% {
      transform: scale(0.3);
    }
    40% {
      transform: scale(1);
    }
  }
  /*  Swing
  
        <div class="sk-swing">
          <div class="sk-swing-dot"></div>
          <div class="sk-swing-dot"></div>
        </div>
   */
  .sk-swing {
    width: var(--sk-size);
    height: var(--sk-size);
    position: relative;
    animation: sk-swing 1.8s infinite linear;
  }
  
  .sk-swing-dot {
    width: 45%;
    height: 45%;
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    margin: auto;
    background-color: var(--sk-color);
    border-radius: 100%;
    animation: sk-swing-dot 2s infinite ease-in-out;
  }
  
  .sk-swing-dot:nth-child(2) {
    top: auto;
    bottom: 0;
    animation-delay: -1s;
  }
  
  @keyframes sk-swing {
    100% {
      transform: rotate(360deg);
    }
  }
  @keyframes sk-swing-dot {
    0%, 100% {
      transform: scale(0.2);
    }
    50% {
      transform: scale(1);
    }
  }
  /*  Circle
  
        <div class="sk-circle">
          <div class="sk-circle-dot"></div>
          <div class="sk-circle-dot"></div>
          <div class="sk-circle-dot"></div>
          <div class="sk-circle-dot"></div>
          <div class="sk-circle-dot"></div>
          <div class="sk-circle-dot"></div>
          <div class="sk-circle-dot"></div>
          <div class="sk-circle-dot"></div>
          <div class="sk-circle-dot"></div>
          <div class="sk-circle-dot"></div>
          <div class="sk-circle-dot"></div>
          <div class="sk-circle-dot"></div>
        </div>
   */
  .sk-circle {
    width: var(--sk-size);
    height: var(--sk-size);
    position: relative;
  }
  
  .sk-circle-dot {
    width: 100%;
    height: 100%;
    position: absolute;
    left: 0;
    top: 0;
  }
  
  .sk-circle-dot:before {
    content: "";
    display: block;
    width: 15%;
    height: 15%;
    background-color: var(--sk-color);
    border-radius: 100%;
    animation: sk-circle 1.2s infinite ease-in-out both;
  }
  
  .sk-circle-dot:nth-child(1) {
    transform: rotate(30deg);
  }
  
  .sk-circle-dot:nth-child(2) {
    transform: rotate(60deg);
  }
  
  .sk-circle-dot:nth-child(3) {
    transform: rotate(90deg);
  }
  
  .sk-circle-dot:nth-child(4) {
    transform: rotate(120deg);
  }
  
  .sk-circle-dot:nth-child(5) {
    transform: rotate(150deg);
  }
  
  .sk-circle-dot:nth-child(6) {
    transform: rotate(180deg);
  }
  
  .sk-circle-dot:nth-child(7) {
    transform: rotate(210deg);
  }
  
  .sk-circle-dot:nth-child(8) {
    transform: rotate(240deg);
  }
  
  .sk-circle-dot:nth-child(9) {
    transform: rotate(270deg);
  }
  
  .sk-circle-dot:nth-child(10) {
    transform: rotate(300deg);
  }
  
  .sk-circle-dot:nth-child(11) {
    transform: rotate(330deg);
  }
  
  .sk-circle-dot:nth-child(1):before {
    animation-delay: -1.1s;
  }
  
  .sk-circle-dot:nth-child(2):before {
    animation-delay: -1s;
  }
  
  .sk-circle-dot:nth-child(3):before {
    animation-delay: -0.9s;
  }
  
  .sk-circle-dot:nth-child(4):before {
    animation-delay: -0.8s;
  }
  
  .sk-circle-dot:nth-child(5):before {
    animation-delay: -0.7s;
  }
  
  .sk-circle-dot:nth-child(6):before {
    animation-delay: -0.6s;
  }
  
  .sk-circle-dot:nth-child(7):before {
    animation-delay: -0.5s;
  }
  
  .sk-circle-dot:nth-child(8):before {
    animation-delay: -0.4s;
  }
  
  .sk-circle-dot:nth-child(9):before {
    animation-delay: -0.3s;
  }
  
  .sk-circle-dot:nth-child(10):before {
    animation-delay: -0.2s;
  }
  
  .sk-circle-dot:nth-child(11):before {
    animation-delay: -0.1s;
  }
  
  @keyframes sk-circle {
    0%, 80%, 100% {
      transform: scale(0);
    }
    40% {
      transform: scale(1);
    }
  }
  /*  Circle Fade
  
        <div class="sk-circle-fade">
          <div class="sk-circle-fade-dot"></div>
          <div class="sk-circle-fade-dot"></div>
          <div class="sk-circle-fade-dot"></div>
          <div class="sk-circle-fade-dot"></div>
          <div class="sk-circle-fade-dot"></div>
          <div class="sk-circle-fade-dot"></div>
          <div class="sk-circle-fade-dot"></div>
          <div class="sk-circle-fade-dot"></div>
          <div class="sk-circle-fade-dot"></div>
          <div class="sk-circle-fade-dot"></div>
          <div class="sk-circle-fade-dot"></div>
          <div class="sk-circle-fade-dot"></div>
        </div>
   */
  .sk-circle-fade {
    width: var(--sk-size);
    height: var(--sk-size);
    position: relative;
  }
  
  .sk-circle-fade-dot {
    width: 100%;
    height: 100%;
    position: absolute;
    left: 0;
    top: 0;
  }
  
  .sk-circle-fade-dot:before {
    content: "";
    display: block;
    width: 15%;
    height: 15%;
    background-color: var(--sk-color);
    border-radius: 100%;
    animation: sk-circle-fade 1.2s infinite ease-in-out both;
  }
  
  .sk-circle-fade-dot:nth-child(1) {
    transform: rotate(30deg);
  }
  
  .sk-circle-fade-dot:nth-child(2) {
    transform: rotate(60deg);
  }
  
  .sk-circle-fade-dot:nth-child(3) {
    transform: rotate(90deg);
  }
  
  .sk-circle-fade-dot:nth-child(4) {
    transform: rotate(120deg);
  }
  
  .sk-circle-fade-dot:nth-child(5) {
    transform: rotate(150deg);
  }
  
  .sk-circle-fade-dot:nth-child(6) {
    transform: rotate(180deg);
  }
  
  .sk-circle-fade-dot:nth-child(7) {
    transform: rotate(210deg);
  }
  
  .sk-circle-fade-dot:nth-child(8) {
    transform: rotate(240deg);
  }
  
  .sk-circle-fade-dot:nth-child(9) {
    transform: rotate(270deg);
  }
  
  .sk-circle-fade-dot:nth-child(10) {
    transform: rotate(300deg);
  }
  
  .sk-circle-fade-dot:nth-child(11) {
    transform: rotate(330deg);
  }
  
  .sk-circle-fade-dot:nth-child(1):before {
    animation-delay: -1.1s;
  }
  
  .sk-circle-fade-dot:nth-child(2):before {
    animation-delay: -1s;
  }
  
  .sk-circle-fade-dot:nth-child(3):before {
    animation-delay: -0.9s;
  }
  
  .sk-circle-fade-dot:nth-child(4):before {
    animation-delay: -0.8s;
  }
  
  .sk-circle-fade-dot:nth-child(5):before {
    animation-delay: -0.7s;
  }
  
  .sk-circle-fade-dot:nth-child(6):before {
    animation-delay: -0.6s;
  }
  
  .sk-circle-fade-dot:nth-child(7):before {
    animation-delay: -0.5s;
  }
  
  .sk-circle-fade-dot:nth-child(8):before {
    animation-delay: -0.4s;
  }
  
  .sk-circle-fade-dot:nth-child(9):before {
    animation-delay: -0.3s;
  }
  
  .sk-circle-fade-dot:nth-child(10):before {
    animation-delay: -0.2s;
  }
  
  .sk-circle-fade-dot:nth-child(11):before {
    animation-delay: -0.1s;
  }
  
  @keyframes sk-circle-fade {
    0%, 39%, 100% {
      opacity: 0;
      transform: scale(0.6);
    }
    40% {
      opacity: 1;
      transform: scale(1);
    }
  }
  /*  Grid
  
      <div class="sk-grid">
        <div class="sk-grid-cube"></div>
        <div class="sk-grid-cube"></div>
        <div class="sk-grid-cube"></div>
        <div class="sk-grid-cube"></div>
        <div class="sk-grid-cube"></div>
        <div class="sk-grid-cube"></div>
        <div class="sk-grid-cube"></div>
        <div class="sk-grid-cube"></div>
        <div class="sk-grid-cube"></div>
      </div>
   */
  .sk-grid {
    width: var(--sk-size);
    height: var(--sk-size);
    /* Cube positions
     * 1 2 3
     * 4 5 6
     * 7 8 9
     */
  }
  
  .sk-grid-cube {
    width: 33.33%;
    height: 33.33%;
    background-color: var(--sk-color);
    float: left;
    animation: sk-grid 1.3s infinite ease-in-out;
  }
  
  .sk-grid-cube:nth-child(1) {
    animation-delay: 0.2s;
  }
  
  .sk-grid-cube:nth-child(2) {
    animation-delay: 0.3s;
  }
  
  .sk-grid-cube:nth-child(3) {
    animation-delay: 0.4s;
  }
  
  .sk-grid-cube:nth-child(4) {
    animation-delay: 0.1s;
  }
  
  .sk-grid-cube:nth-child(5) {
    animation-delay: 0.2s;
  }
  
  .sk-grid-cube:nth-child(6) {
    animation-delay: 0.3s;
  }
  
  .sk-grid-cube:nth-child(7) {
    animation-delay: 0s;
  }
  
  .sk-grid-cube:nth-child(8) {
    animation-delay: 0.1s;
  }
  
  .sk-grid-cube:nth-child(9) {
    animation-delay: 0.2s;
  }
  
  @keyframes sk-grid {
    0%, 70%, 100% {
      transform: scale3D(1, 1, 1);
    }
    35% {
      transform: scale3D(0, 0, 1);
    }
  }
  /*  Fold
  
        <div class="sk-fold">
          <div class="sk-fold-cube"></div>
          <div class="sk-fold-cube"></div>
          <div class="sk-fold-cube"></div>
          <div class="sk-fold-cube"></div>
        </div>
   */
  .sk-fold {
    width: var(--sk-size);
    height: var(--sk-size);
    position: relative;
    transform: rotateZ(45deg);
  }
  
  .sk-fold-cube {
    float: left;
    width: 50%;
    height: 50%;
    position: relative;
    transform: scale(1.1);
  }
  
  .sk-fold-cube:before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--sk-color);
    animation: sk-fold 2.4s infinite linear both;
    transform-origin: 100% 100%;
  }
  
  .sk-fold-cube:nth-child(2) {
    transform: scale(1.1) rotateZ(90deg);
  }
  
  .sk-fold-cube:nth-child(4) {
    transform: scale(1.1) rotateZ(180deg);
  }
  
  .sk-fold-cube:nth-child(3) {
    transform: scale(1.1) rotateZ(270deg);
  }
  
  .sk-fold-cube:nth-child(2):before {
    animation-delay: 0.3s;
  }
  
  .sk-fold-cube:nth-child(4):before {
    animation-delay: 0.6s;
  }
  
  .sk-fold-cube:nth-child(3):before {
    animation-delay: 0.9s;
  }
  
  @keyframes sk-fold {
    0%, 10% {
      transform: perspective(140px) rotateX(-180deg);
      opacity: 0;
    }
    25%, 75% {
      transform: perspective(140px) rotateX(0deg);
      opacity: 1;
    }
    90%, 100% {
      transform: perspective(140px) rotateY(180deg);
      opacity: 0;
    }
  }
  /*  Wander
  
        <div class="sk-wander">
          <div class="sk-wander-cube"></div>
          <div class="sk-wander-cube"></div>
          <div class="sk-wander-cube"></div>
          <div class="sk-wander-cube"></div>
        </div>
   */
  .sk-wander {
    width: var(--sk-size);
    height: var(--sk-size);
    position: relative;
  }
  
  .sk-wander-cube {
    background-color: var(--sk-color);
    width: 20%;
    height: 20%;
    position: absolute;
    top: 0;
    left: 0;
    --sk-wander-distance: calc(var(--sk-size) * 0.75);
    animation: sk-wander 2s ease-in-out -2s infinite both;
  }
  
  .sk-wander-cube:nth-child(2) {
    animation-delay: -0.5s;
  }
  
  .sk-wander-cube:nth-child(3) {
    animation-delay: -1s;
  }
  
  @keyframes sk-wander {
    0% {
      transform: rotate(0deg);
    }
    25% {
      transform: translateX(var(--sk-wander-distance)) rotate(-90deg) scale(0.6);
    }
    50% { /* Make FF rotate in the right direction */
      transform: translateX(var(--sk-wander-distance)) translateY(var(--sk-wander-distance)) rotate(-179deg);
    }
    50.1% {
      transform: translateX(var(--sk-wander-distance)) translateY(var(--sk-wander-distance)) rotate(-180deg);
    }
    75% {
      transform: translateX(0) translateY(var(--sk-wander-distance)) rotate(-270deg) scale(0.6);
    }
    100% {
      transform: rotate(-360deg);
    }
  }
  :root {
    --sk-size: 30px;
    --sk-color: #fff;
  }
  
  .sk-wave {
    width: 40px;
    white-space: nowrap;
  }
  
  .sk-fading-circle .sk-circle {
    margin-top: 0;
    margin-bottom: 0;
  }
  
  .sk-wave {
    width: 40px;
    white-space: nowrap;
  }
  
  .sk-fading-circle .sk-circle {
    margin-top: 0;
    margin-bottom: 0;
  }